Sum 6 ndl-PCB excl. LOQ

Sum of non-dioxin-like (ndl) PCBs: PCB 28, PCB 52, PCB 101, PCB 138, PCB 153, and PCB 180. These six congeners are also called indicator PCBs or ICES-6. The calculation of the sum, all values of the individual congeners that are below the limit of quantification are set equal to the limit of quantification. The calculation is performed according to the upperbound concentration method: upperbound concentrations are calculated on the assumption that all the values of the different congeners below the limit of quantification (LOQ) are equal to the limit of quantification.

Specimen

  • Bioindicator in rivers and lakes
  • As the only viviparous fish in German nearshore waters, it is a bioindicator in nearshore coastal marine ecosystems.
  • Inshore, the herring gull mainly feeds from the sea: upon fish, mussels, and crabs.

Sampling area

Sampling period

2003 - 2021